[Bug rtl-optimization/32293] [4.3 Regression] internal compiler error: in do_SUBST, at combine.c:502

[ubizjak at gmail dot com]

------- Comment #9 from ubizjak at gmail dot com  2007-06-12 07:01 -------
Following patch should fix the ICE:

Index: combine.c
===================================================================
--- combine.c   (revision 125636)
+++ combine.c   (working copy)
@@ -5210,11 +5210,17 @@ simplify_if_then_else (rtx x)

       if (true_code == EQ && true_val == const0_rtx
          && exact_log2 (nzb = nonzero_bits (from, GET_MODE (from))) >= 0)
-       false_code = EQ, false_val = GEN_INT (nzb);
+       {
+         false_code = EQ;
+         false_val = GEN_INT (trunc_int_for_mode (nzb, GET_MODE (from)));
+       }
       else if (true_code == EQ && true_val == const0_rtx
               && (num_sign_bit_copies (from, GET_MODE (from))
                   == GET_MODE_BITSIZE (GET_MODE (from))))
-       false_code = EQ, false_val = constm1_rtx;
+       {
+         false_code = EQ;
+         false_val = constm1_rtx;
+       }

       /* Now simplify an arm if we know the value of the register in the
         branch and it is used in the arm.  Be careful due to the potential


-- 

ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ubizjak at gmail dot com
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-06-12 07:01:32
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32293